Machine for making coil-springs.



A. J. LEWIS.

MACHINE FOR MAKING COIL SPRINGS.

APPLICATION FILED JAN.4,1913.

1,083,501. Patented Jan.6,1914.

B SHEETS-SHEET l.

INVENTOR ATTORNEY A. J. LEWIS.

MACHINE FOR MAKING COIL SPRINGS.

APPLICATION FILED JAN. 4, 1913 Patented J an. 6, 1914.

8 SHEETS-QIIEET 2.

WITNESSES:

ATTORNF Y A. J. LEWIS.

MACHINE FOR MAKING COIL SPRINGS.

APPLICATION FILED JAN.4, 1913.

1,083,501 Patented'Jan. 6, 1914.

8 SHEETS-SHEET 3.

A49 j a; BY

A. J. LEWIS.

MACHINE FOR MAKING COIL SPRINGS.

APPLICATION FILED JANA, 1913.

1,083,5G1, Patented Jan. 6, 1914.

8 SHEETS-SHEET 4.

WITNESSES. llW/E/VTOR A. J. LEWIS.

MACHINE FOR MAKING COIL SPRINGS.

APPLICATION FILED JANA, 1913 1,083,501. Patented Jan.6,1914.

B SHEET S-SHEET 5.

WITNESSES. INVENTOR JW 6mm LL": (:1. 7, IL (z By I I ATTORNEY A. J.LEWIS.

MACHINE FOR MAKING COIL SPRINGS.

APPLICATION FILED JANA, 1913 Patented Jan. 6, 1914.

8 SHEETSSHEET 6.

9v RD WITNESSES.

A. J. LEWIS.

MACHINE FOR MAKING COIL SPRINGS.

APPLIGATION FILED JANA, 1913.

Patented Jan. 6, 191 1.

8 SHEETS-SHEET 7.

IN l/E N TOR @ZzQL ZJM WI T/VESSES;

A TTORNEY A. J. LEWIS. MACHINE FOR MAKING COIL SPRINGS.

APPLICATION FILED JANA, 1913 1 @83 5@1 D Patented Jan. 6, 191

v WITNESSES. llVVl'f/VTOH Zak. azifzgaw A TTOR/VE V UNITED strni nsMFAQIENT OFFICE.

ARTHUR J. LEWIS, or STRATFORD, CONNECTICUT, ASSIGNOR TO THE BAIRD mamasQOMPANY, or ZBBIDGEPORT, CONNECTICUT, A conroaacuon or CONNECTICUT.

MACHINE. FOR MAKING COIL-SPRINGS.

Specification of Letters Patent.

' Patented Jan. 6, 1914.

Application filed January 4, 1913. Serial No. 740,118.

To all whom. it may com-cm Be it known that I, ARTHUR J. LEWIS, acitizen of the United States, residin .at Stratford'. county ofFairfield, State of onnecticut, have invented an Improvement 1n Machinesfor Making Coil-Springs, of whlch the following is a specification.

This invention has for its object to proride an automatic machine formaking coil springs generally; that is, a single machine that will makecoil springs of any length, or size, or style from wire of any sizewithin the capacity of the machine. By that I mean, that my novelmachine will produce either straight, barrel or cone springs of anyrequired length or size and from wire of any size within the capacity ofthe machine.

A further object of the .invention is to provide in an automatic coilsprin making machine what I term an adjustab fe' diameter control; thatis, mechanism for regulating the increase or decrease in the diameter ofsuccessive coils in the. making of barrel, cone and similar springs.

A further object of the invention is to provide in an automatic coilspring making machine what I term an adjustable pitch control; that is,mechanism for regulating the distance of the coils apart in the 1011-gitudinal direction of the spring. The diameter control and the pitchcontrol t0- gether enable me to produce springs of any of the variousstyles inuse, with coils of uniform diameter or of varying diameter andwith the coils lying in contact or at any required distance apart, orpartly in contact and partly spaced apart or any required combination ofspacing and diameter of successive coils.

A further object of the invention is to provide in an automatic coilspring making machine mechanism for setting each spring before it is cutoff.

A further object of the invention is to provide in an automatic coilspring making machine special adjustments and a novel construction ofcut-ofi' mechanism.

A further object of the invention is to provide in an automatic coilspring making machine what I term a cut-off control; that is, mechanismadapted to be used in the manufacture of cone and barrel springs, whichwill automatically shift the position of the cut-off tool in cutting offalternately erative, as in the making of special springs requiring anamount of wire in excess of the normal maximum length for which themachine is adapted. a

With these and other objects in view the invention .consists in certainconstructions and in certain parts, improvements andcombinations whichwill be hereinafter described and then specifically pointed out in theclaims hereunto appended.

In the accompanying drawings forming a part of this specification, inwhich similar reference characters indicate the same parts in all oftheviews, Figure l-is a front elevation of the machine complete exceptthat the setting attachment is removed; Fig.2 a plan view correspondinwith Fig. 1; Fig. 3 an elevation of the. f eding mechanism detached;Fig. 4 an elevation of the feeding mechanism as seen from the right inFig. 3; Fig. 5 a section on the line 5.-5 in- Fig. 3, looking in thedirection of the 8.1.- rows; Fig. 6 a plan view. of thepitchcom trol orpitch changing mechanism detached; Fig. 7 an elevation correspondingwith Fig. 6; Fig. 8 an elevation as seen from the. right in Fig. 7, theyoke arm being in section; Fig. 9 a detail elevation of a portion ofthediameter control mechanism, the pointof View being indicated by theline- 9 in Fig.

2; Fig. 10 a plan View of a portion ofthe mechanism appearing in Fig. 9,certain parts being in section on the line 10;10 in Fig. 9, looking inthe direction ofthe ar-. rows; Fig. 11 a detail elevation as seen fromthe left in Fig. .9; Fig. 12 an edge iew of the operating cam as seenfrom the right in. Fig. 9; Fig. 13 an elevation of one of the members ofthe diameter control mechanism detached; Fig. 14 a plan view of thecutoff mechanism; Fig. 14* adetail View corresponding therewith, showinga changed position of the cam roll; Fig. 15 an elevation correspondingwith Fig. 14;- Fig. 16 a section on-the line 1616 in Fig. 15, looking inthe direction of the arrows; Fig. 17 asection on the line 1717 in Fig..15, looking lot in the direction of the arrows; F ig. 18 a dc:

Fig. 21 a section on the line 21-21 in Fig. 20, lookin in the directionof thearrows; Fig. 22 a etail view illustrating the operation of coilina left-hand spring; Fig. 23 a detail side e evation as seen from theleft in Fig. 22; Fig. 24 (see Sheet 1) a view illustrating thecoiling-of a right-hand cone spring; Fig. 25 a View as seen from theright in Fig. 24; Fig. 26 an elevation of a straight coil springindicating the use of the pitch control mechanism in laying a portion ofthe coils in contact and the others spaced apart;and Fi s. 27, 28,29 and30 are views of different sty es of springs indicating the adaptabilitof my novel machine to the production 0 any style of coil spring thatmay be required.

40 denotes the framework of the machine which may be of any ordinary orpreferred construction and 41 a driving shaft which carries abalance-wheel 45 and to which motion may be imparted in any suitablemanner, as by means of a belt (not shown) passing over a pulley 42. Thispulley in practice is loose on the shaft and is connected anddisconnected by means of suitable clutch mechanism, indicated by 43,which is not illustrated in detail, as specifically it forms no portionof the present invention.

The several mechanisms of the machine are driven from shaft 41 in themanner which I will now describe. 46 (see dotted lines in Fig. 1)denotes a pinion on shaft 41 which meshes with a gear wheel 47 on ashaft 48 which for convenience I will term the main shaft. The feedingmechanism is driven by means of a link 49, one end of which isadjustably connected to gear wheel 47 and the other end to anoscillating segment ear 50. The diameter control, pitch contro andcut-off control are all driven by means of an intermediate shaft 51which receives motion from the main shaft through bevel gears 52 (seedotted lines in Fig. 2). Shaft 51 is provided with gear wheels 53 and 54adapted to. mesh respectively with gear wheels 55 and 56 on a cam shaft57 to provide two s eeds for said shaft, as will presently be ullyexplained. The cut-off is operated by means of a groove cam 58 on themain shaft and the setting mechanism is operated by means of a face cam59 on the main shaft.

The feeding mechanism.(See Figs. 1 to 5 inclusive). 60 and 61 denote thefeed rolls carried respectivel by shafts 62 and 63 mounted on a brac et64 rigidly secured to the frame work. Shafts 62 and 63 carryintermeshing gear wheels 65 and 66, and shaft 63 carries a ratchet wheel67 which is engaged by pawls 68 carried by a disk 69 formed integralwith or rigidly secured to a pinion 70 which is mounted to rotate onshaft 63 and engages segment gear 50. The

feed rolls are shown as rovided withcorresponding grooves of di erentsize. Should it be required, for example, to make springs from a size ofwire too small to be gripped by the right hand grooves as seen in F 1g.3, the rolls would be reversed to place the smaller grooves in operativeposition. Each of the grooves will take several sizes of wire, it beingsimply required that the wire be gripped firmly by the rolls. In orderto provide a firm grip upon the wire, upper feed roll shaft 62 isjournaled in a box 71 which is pivoted to the bracket as at 72. Box 71and the upper feed roll are forced downward to grip the wire by means ofa hand screw 73 in the bracket, the end of which bears upon the box. Thebearing blocks for shaft 63 and box 71, carrying shaft 62, are retainedin place by cap plates 74 and 75 secured to the bracket. The wire passesto the feed rolls through a guide 76 carried by an arm 77 extending fromcap plate 75, the guide being shown as locked in position by a setscrew. After leaving the feed rolls the wire passes through a guide 78carried by a bracket'79 and shown as secured in place by set screws.

An important feature of the present invention is that withoutregard tothe length, shape or diameter of the springs that are to be formed, Idetermine the length of wire allowed for each sprin wholly independentlyof the cutting-o mechanism, by a simple adjustment of the feedingmechanism. Link 49 by which the segment ar is oscillated is connected togear wheel 4 on the main shaft by means of a stud 80 which turns in thelink and is provided with a T-head engaging a correspondingly shapedgroove in an enlargement 81 of one of the spokes ofthe ear wheel. Itwill be obvious that the position of the stud with relation to the axisof the gear wheel determines the amount of oscillation of the segmentgear, and that the amount of this oscillation determines the length ofWire drawn in by the feed rolls, it being understood of course that thesegment gear makes a complete oscillation in unison with the rotation ofthe main shaft. As shown in Figs. 1 and 2, stud 80 is adjusted at theextreme of its outward movement to produce the maximum length of wire.Should less wire be required, the accurate feeding of any desired lengthmay be produced by moving the stud inward toward the axis of the gearwheel. The 0 eration of the feeding mechanism will be 0 vious from Figs.1 to 5 inclusive. When segment gear 50 is moving toward the left, asseen in Fig. 1, pawls 68 will engage ratchet 67 and will impart rotarymovement to ear wheels 65 and 66, the feed roll sha ts and the feedrolls, and when the segment gear is moving toward the right, as seen inFig. 1, the pawls will slip over the teeth of the ratchet. In order toprevent the possibility of the feed rolls continuing to move forward bymomentum after the forward movement of the segment gear has stopped,when the machine is working upon light wire, and likewise to prevent thepossibility of backward movement of the feed rolls through reaction ofthe wire when the machine is working upon heavy wire, I provideafriction device on feed roll shaft 63 which is indicated as a whole by82. This friction consists of clamping arms inclosing teed roll shaft(33 and drawn together by a set screw, the arms being retained againstrotation with the shaft by a pin passing between them and engaging a lug83 on cap plate 74.

The diameter c0ntr0Z.-l rom guide 78 the wire passes to the coilingrolls indicated specifically by 84, 85 and 86. Ceiling roll 84 i iscarried hy a slide 87 which is adapted to be moved longitudinally in aholder 88 having a shank 89 which engages a socket in the frame work andis locked in place by a set screw 90 (see Fig. 1). The inner end of theholder is provided with a longitudinal slot. 91 and the sides areclamped together to lock slide 87 in place by a cap screw 92. The slideis adjusted longitudinally in the holder by means of a screw 93 whichengages the holder and rotates without threaded en-.

gagement in a plate 94 through which a reduced end of the slide passes,said reduced end being threaded and engaged by a nut 95. The screw isprovided with a hand wheel 96 and the slide is provided with aprojecting pin 97 for convenience in manipulation. It will of course beobvious that the three coiling rolls must each be adjusted with relationto the others. For the present, however, I will simply describe thethree adjustments of coiling roll Set. First adjustment:"he diameter ofthe coils determined by the longitudinal adjustment of the slide. Toincrease or diminish the diameter of the coils, cap screw 92 is loosenedand the slide is moved in or out by rotation of screw 93 and afteradjusti'nent is locked in position by tightening up the cap screw.Second adjustment. :.l.t will necessarily follow that if the diameter ofthe coils is materially changed, the position of the coiling roll withrelation to the center of the coil must be changed more or less tocorrespond. That is to say, a certain relation must be maintainedbetween the diameter of the coils and the position of the coiling rollwith relation .to the center of the coils. This adjustment is effectedby loosening set screw 90 and rotating the holder on the axis of shank89, the holder being locked in place after adjustment by tightening upthe set screw again. The third adjustment of said coiling roll hasrelation to the pitch of the coils of the spring that is being formed,but does not control their pitch, said adjustnua'il merely placing thecoiling roll in accurate relation to the pitch, which is determined bythe pitch control, presently to be described. The adjustment is effectedby loosening both cap screw 92 and nut 95 and rotating slide 87 in theholder,-in either direction, as may be required, b means of pin 97, theslide being then loclied in place by tightening up the cap screw andnut.

(.o-iling roll 85 is carried by aslide 98 which is adapted to be movedlongitudinally in a holder 99 having a shank 100 appearing in dottedlines only but corresponding with shank 89 of holder 88. This shank engages a socket in the frame work and is locked in place by a set screw101 (see Fig. 1). Coiling roll 85 has the same adjustments as roll. 8%and in practice an additional adjustment. First adjustment:'1he slide isadjusted longitudinally in the holder to determine the diameter of thecoils by means of a screw 102 which has threaded engagementwith theslide and is held against longitudinal movement, but free to rotate, ina bracket 103 which is cast-integral with or rigidly secured to theholder. Rotation of screw 102 will move the slide longitudinally in theholder, leaving the slide and screw free to rotate together, however.Second adjustment :-The adjustment to determine the'position of the rollwith relation to the center of the coils is eli'ected by loosening setscrew 101 (see Fig. 1-) and rotating the holder on the axis of shank 100(appearing only in dotted lines in Fig. 22) in the same manner that roll84 and holder 88 are rotated. Third adjustment :In order to ad just theposition of the roll with relation to the pitch of the coils, the slideis rotated in the holder, as may be required, and then locked to theholder by means of a set screw 104. Fourth adjustment:This adjustment ismerely an addition to the second adjustment of said coiling roll 85. forthe purpose of changing the plane of the roll to correspend with changesin the plane of the wire engaged thereby as it is formed into a coil. Inworking upon fine wire the change in the plane of the rolls is butslight, the heavier the wire the farther outward successively rolls 85and 86 will require to be adjusted. As already explained, upon looseningset screw 101, shank 100 carrying holder 99 will be free to rotate inits socket in the frame work. It will likewise be free to be movedoutward longitudinally in the socket. Having drawn holder 99 outward asfar as may be required to place roll 85 in its operative plane, carebeing taken atthe same time to maintain the second adjustment, the roll,

" ment with a second slide 109 lying parallel with slide 105 in theholder. The screw rotates without threaded engagement in a plate 110through which a reduced end of slide 105 passes, said reduced end beingthreaded and engaged by a nut 111. The screw is provided with a handwheel 112 and slide 105 is provided with a projecting pin 113 forconvenience in manipulation. To increase or diminish the diameter of thecoils, slide 105 is moved in either direction, as may be required, bymanipulation of the hand wheel. The holder is provided at its inner endwith a longitudinal slot 115 and a cap screw 114. clamps the sidestogether to lock the slide in operative position. Secondadjustme'ntz-This adjustment determines the position of the roll withrelation to the center of the coil and is effected by loosening setscrew 116 (see Fig. 1) and rotating the holder on the axis of shank 107(see 9) in the same manner that rolls 84 and 85 and their holders arerotated, the set screw being then tightened up to look the parts inplace. Third adjustment :-In order to adjust the position of the rollwith relation to the pitch of the coils, nut 111 is loosened and slide105 is rotated in the holder, as may be required, by means of handle 113and then looked in place by tightening up the nut again. Fourthadjustment:Il1is adjustment, as is the case of roll 85, is merely anaddition to the second adjustment and is made for the purpose ofchanging the plane of the roll to correspond with changes in the planeof the wire engaged thereby as it is formed into a coil. The adjustmentis etiected by moving shank 107 inward or outward in its socket, as maybe required, set screw 116 having been loosened, after which the setscrew is tight ened up, care being taken at the same time to maintainthe second adjustment.

The cam control of coiling roll 86.-It will be understood that all ofthe adjustments of coiling rol1s 84, 85 and 86 heretofore described haverelation only to the makingof straight springs. In order to provide forthe making of cone, barrel and other springs in which the coilsprogressively increase or diminish in diameter, I have providedautomatic means for varying the dlameters of the coils in any style ofspring that may be required. This mechanism is o erated from a cam 117on shaft 57. It Will of course be understood that a new cam is requiredwhenever the style of spring is changed. Provided the style is notchanged, owever, longer or shorter springs or springs having greater orlesser minimum and maximum diameter or made from larger or smaller-wiremay be produced bythe same cam through the use of an adjustmentpresently to be described.

Change of style as I have used the words is intended to mean an increaseor decrease in the relative difference between the diameters ofsuccessive coils. In order to provide for convenient changes in cams,when required, I have shown a divided cam, each part being provided witha slot to receive a cap screw 118 engaging a collar 119 which is rigidlysecured to the shaft. As already explained, the diameter of the coilsproduced is determined by the position of the coiling rolls, moreespecially the position of coiling roll 86, it being only necessary toreciprocate this roll toward or from the center of the coils to produceany required progressive changes in the diameter of the coils. Asalready explained, in the making of straight springs, cap screw 114 istightened up, thereby locking slides 105 and 109 to the holder. In themaking of barrel, cone and similar springs, in order to permit freereciprocation of the slides, ca screw 114 is loosened. This leaves thesli es to be controlled through the cam by means of bell-crank levers120 and 121 and a link 122 connecting said bell-crank levers. Bothbell-crank levers are pivoted to a bracket 123 rigidly secured to theframe work. One arm of bell-crank lever 120 carries a roll 124 whichengages the periphery of the cam and one arm of bell-crank lever 121 isadapted to engage slide 109. I have shown the slide as provided with arounded lug 125 upon which the arm of the lever urs. The slides, whichit must be understood move as one, are held in the raised position, withthe rounded lug bearing against an arm of bell-crank lever 121, by meansof a spring 126, one end of which is socketed in holder 100, the otherend being supported by a pin extending from the rounded lug.

Link 122 is connected to bell-crank lever .121 by means of a pivot pin127, the other end of said link being pivoted on a stud 128, the shankof which is adapted to slide in a slot 129 in an arm I will define asthe second arm of bell-crank lever 120. The adjustment of this stud isefi'ected by means of a screw 130 which is mounted to rotate withoutthreaded engagement in the end of he arm and has threaded engagementwith the stud (see Figs. 9 and 11). Roll 124 is retained in engagementwith the cam by means of a spring 131, one end of which is connected topivot pin 127 and the other ,end to the inner end of bracket 123. The

adjustability of stud 128 enables me to make various sizes and lengthsof cone and barrel springs and to use different sizes of wire withoutchanging the cam, provided, of course, that the style of the spring isnot changed.

If it is desired to produce springs of greater minimum and maximumdiameter than the machine has been producing, adjusting screw 130 willbe rotated to move stud 128 outward in the slot. If springs of lessminimum and maximum diameter (without change of style) are required, thestud will be moved inward in the slot. The effect in brief of thisadjustment is to increase or diminish the reciprocation of the slide,wholly independently of the action of the'cam.

It will be obvious that in changing the machine from right to left handsprings and vice versa, the functions of rolls 84 and 86 will bereversed. As shown in full lines in Fig. 22, the coiling rolls are setto produce left hand springs. In the making of right hand springs, thewire would first contact with roll 86 and the most important part of thework would be performed by roll 84. In the making of either right orleft hand straight springs all that is required is to properly adjustrolls '84, 85 and 86 in the manner already described. In the making ofbarrel, cone and similar springs, however, in changing from left toright hand springs or vice versa, the first and.

third holders, slides and rolls are transposed bodily; that is to say,roll 86, slide 105 and holder 106, as seen in Fig. 22, are changed tothe position. occupied by roll 84, slide 87 and holder 88. Bracket 123and the bell-crank levers and link carried thereby are also shifted onthe frame work to correspond with the changed position of holder 106 andthe parts carried thereby. In Fig. 22, roll 86 and its holder are inposition for making left hand springs and in Fig. 9 they are in positionfor making right hand springs. In Fig. 22 the bracket does not show, butits position would necessarily be inverted. from that in Fig. 9.

Pitch control mc0izam'sm.-( See Figs. 6, 7. 8 and 23.) The term pitchcontrol in the sense of this specification means mechanism forregulating the distance apart of the coils in the longitudinal directionof the spring; that is, this mechanism determines whether the coilsshall lie in contact with each other, or spaced apart and how far apart,or whether in portions of the spring the coils lie in contact and inother portions spaced apart. The desiredresult is effected by means of apusher 132 carried by a rod 133 which is adapted to reciprocate freelyin a hole in the frame Work. the outer end of said rod passing through aguide plate 134 which retains it in alinementbut permits lateralmovement of the inner endof the rod. The pusher is actuated from a cam135 on shaft 57. This cam is engaged by a roll 136 carried by anarm 137carrying at its inner end a yoke 138 which straddles the shaftandretains the arm in operative position. The outer end of arm 137 ispivoted on a stud 139 which is adjustable in a slot 140 in an arm 141pivoted to a bracket 142 secured to the frame work. The stud is adjustedin the slot to increase or diminish the throw of the pusher, and islocked in place after adjustment. by a nut 143 which bears against asleeve 144 in a head at the outer end of the arm. The inner end of rod133 engages the head of a stud 145, passing through a holein said headand being locked in position by a set screw 146. The stud is free torotate in the head of an arm 147 which is pivoted to bracket 142. Arms141 and 147 may be cast independent and secured together but arepreferably cast integral, as shown, and oscillate on a pin 148 in thebracket. about the hub of the arms and having one end connected to thebracket and the other bearing against one of the arms, acts to retainthe roll in close engagement with the cam. It will be noted (see Fig.23) that the operative face of the pusher is made convex in order toreduce the bearing surface upon wire. In practice the pusher is madebroad enough to enable it to act upon coils of varying diameter and ischanged when required. Theadjustment of the outer end of arm 137 in theslot in arm 141 determines the amount the coils are separated from eachother; that is, the spread of the coils, it being understood that thepusher bears upon a coil already formed and im- A spring 149 coiledparts a permanent bend to the wire, separating the coil against which itbears the required amount from the coil that is being formed. Where thestyle of spring is changed, that is, where the pusher is re-.

illustrated in either Figs. 29 or 30, a change of cams is required, itbeing understood of course that the cam must be accurately laid out toproduce the desired result.

The setting mechanism.-It is of course well understood that in themanufacture of all compression springs for accurate work, the springsare formed to a greater than their normal length and require to be set,as it is termed, before they are ready for use; that is, the spring mustreceive what is termed an initial set or compression. This operation isordinarily performed independently of the making of the spring, as by amanually operated arbor press. In my present machine I do away with thisadditional operation and set each spring before it is cut ofi. This 0eration is performed by the mechanism il ustrated in Figs. 19, '20 and21.

150 denotes the setting plunger which is adapted to reciprocate in abracket 151 which is adjustably secured to the framework, as willpresently be described. The plunger is provided with a detachable head152 which is suitably shaped to pass within and also to supportcircumferentially the outer coil of the spring and is changed whenrequired. The plunger is reciprocated by means of a lever 153 which ispivoted to the bracket, as at 159, and is provided at one end with aroll 154 which engages the face of cam 59 on shaft 48.

155 denotes a link," one end of which is pivoted to the lever and theother to a clamp 156 which adjustably enga es the plunger and is lockedin position a ter adjustment by a cap screw 157. The roll is retained inengagement with the 'cam by means of a spring 158, one end of which en-'gages the lever and the other end the bracket.

In order to rovide forthe necessary adjustments in c anging from largeto small springs and vice versa, or in making the change from right handto left hand springs and vice verse, I interpose a plate 160 between thebase of the bracket and the frame work and secure both bracket and plateto the frame work by means of cap screws 161 which pass throughelongated slots 162 in the base of the bracket and-the plate and engagethe frame work. It will be noted (see Fig. 19) that the slots in thebracket base are considerably wider than the screws. This is in order topermit longitudinal movement of the bracket toward and from the axialline of the spring. In order to retain the bracket and plate in perfectalinenient I provide one of said parts with a rib 163 (see Fig. 21)which engages a corresponding groove in the other part. The bracket andplate are moved together in changing from right to left hand springs, orvice versa, by means of a screw 164 which is mounted to rotate withoutthreaded engagement in a bracket 165 rigidly secured to the frame work.This screw has threaded engagement with the plate and will move theplate and bracket vertically any required distance within the limit ofslots 162.

In use, the adjustment of the setting plunger is determined by the pointof attachment of link .155 thereto by means of the clamp. Durin thesetting operation, the attached end 0 the spring is supported by thecoilin rolls. It should be understood that a ter the formation of eachspring the feeding mechanism stops, at which instant the settingoperation takes place, and after that the operation of the cut-offmechanism, presently to be described. Should it be required, anadditional support for the attached end of the spring may be attached tothe cutofl:' die, presently to be described. I have found, however, thatit is unnecessary as the sprin is securely held by the coiling rolls. Itwi be obvious that the bracket carrying the plunger should be soadjusted as to place the axis of the plunger in approximate alinementwith the axis of the spring to be operatedupon. As there is always moreor less of a tendency of the spring to buckle in the setting operation,said tendency var ing of course with the style and length 0 the spring,the bracket is ordinarily adjusted in the manner just described, so asto place the axial line of the plunger parallel with but slightlyoutside the axial line of the spring, the effect of which is to renderit impossible for the spring to buckle outward when subjected to theaction of the setting plunger and to impart to the spring a tendency tobuckle inward.

In order to furnish the necessary backing for the spring I provide asupporting plate 166 which is suitably shaped to partly inclose thespring and is adjustably secured to the bracket by means of a cap screw167 which passes through a slot in the bracket and engages the plate. Arecess may be provided in the bracketto receive the plate, as indicatedby dotted lines in Figs. 19 and 20. The supporting plate may be adjustedinward or outward to correspond with changes in the size or style ofsprin by loosening the cap screw and then shifting the plate, as may berequired, and locking it in place-by tightening up the cap screw again.

The cut-off 'rrwciia:n-z'sm.-(See Figs. 1, 14, 15, 16 and 17.) Thecut-ofl tool 168 is adjustably secured to a slide 169 adapted toreciprocate in a holder 170 adjustably secured to a table 171 which isprovided with an angle flange 178 by which it is pivoted to the framework, as at 172. The slide is preferably dovetail in form, as shown.

187 is a gib cont-rolled by set screws 188 to take up lost motion. Atthe rear end of the slide is a roll 173, (shown in the present instanceas stepped, for a purpose presently to be explained) which engages thegroove of cam 58 on shaft 48, whereby the slide is actuated to performthe cutting-oft operation.

196 denotes a cut-off die which lies within the coils and cooperateswith the cut-off tool in the cutting-off operation. The shank of thisdie is axially adjustable. in order to place the edge in properrelationto the tool, in a hub 197 on an arm 198 having a shank 199 which engagesa socket in the frame .work, in the same manner as shanks 89, 100

and 107. This adjustment adapts the die to different sizes and to rightand left winds of springs. Shank 199 is locked in place by a set screw200 (see Fig. 1) and the die is locked by a set screw 201 engaging itsshank. The base of the tool is received in a socket in the slide and islocked in place by a cap screw 174 which passes through a slot in theslide and engages the tool. The tool may be adjusted longitudinally withrelation to theslide by means of a screw 175 which bears in the usualmanner against a pin (shown only in dotted lines) which in turn engagesthe end of the tool shank. It will of course be obvious that in order toattain the best results, the movement of the cut-off tool must be towardthe axis of the spring. The necessary adjustment of the tool to providefor changes in the sizes of springs and changes from right to left handsprings and vice versa is effected by swing- .ing table 171, carryingthe holder and slide,

adjustment is eflected by moving holder 170 carrying the slide,transversely relatively to the table. The holder is locked to the tableby means of cap screws 177 which pass through slots 179 in the table andengage the holder (see Fig. 17 These cap screws are shown as locked byset screws 180. for a purpose presently to be explained.

The out-077' eontroL-This mechanism is brought into use in the making ofcone springs and also in the making of special springs requiring anamount of wire in excess of the normal maximum length for which themachine is adapted. As regards 'cone springs. it is obvious that if theywere made with the small end of one spring following the large end ofanother spring. or vice versa. there would be quite a. length of wirewasted between the large end coil of one spring and the small end coilof the next spring. This length of wire is useless for either spring. Ifit is cut in two in the middle it leaves an end tobe removed from eachspring in order to complete it. or if out at either end it leaves alonger end to be removed from one of the springs. In order to whollyavoid this difficulty and to produce finished cone springsautomatically. I make the springs in the form of a double cone andperform the cutting operation alternately atthe large end of two springsand at the small end of two springs. or. expressed otherwise. conesprings are formed alternately with the large end first and the smallend first. This necessitates a cutting operation to separate the largeends of two springs followed by a cutting operation to separate thesmall ends of two springs and calls for the use of. my novel cut-offcontrol. As regards special springs requiring an extra length of wire,it should be understood that the machine is normally adapted to coil amaximum length of wire into a spring of any size or style. This lengthof wire I term the normal maximum of the machine. Suppose, for example,that the normal maximum is sixty inches and that special springs arecalled for requiring a greater length of wire than sixty inches. This Ihave provided for in the present machine to the extent of doubling thenormal maximum; that is to say. provision is made for the manufacture ofsprings of extra a length to the extent of a spring requiring onehundred and twenty inches of wire. This condition also calls for the useof my novel cut-off control. Turning now to Figs. 14 to 18, inclusive.it has already been explained that when cap screws 177 have beenloosened, the holder, slide and cut-off tool may be moved toward or fromthe framework to change the point of operation of the tool, as inchanging from one length of spring to another. The cut-off' controlcauses this change of position of the holder, slide and tool to be madeautomatically. Having loosened screws 177 sufficiently to leave theholder free to move, the screws are locked in the loosened position byset screws 180. The automatic movement of the holder and slide isproduced by means of a cam 181 on shaft 57 which engages a roll 182 onan arm 18?) pivoted to a bracket 18% secured to the framework. This armis adapted to actuate a controlling rod 185, one end of which issocketed in the arm, the other end passing through the framework tooperate the holder.

193 denotes a stop screw which passes transversely through the holderand bears against the framework to limit the movement of the holder,slide 169 and the tool toward the framework, and 1.86 a transverse slidewith which the cont-rolling rod contacts and which is adapted to beadjusted relatively to the holder. The slide is socketed partly in thetable and partly in the holder. as will be understood from Figs. 14. '15and 16. both table and holder being provided with lateral extensions togive additional support to the slide. The portion of the socket in thetable is made \xider than the slide to receive a gib 189 which iscontrolled to take up lost motion and to compensate for Wear by setscrews 190. The adjustment of the transverse slide with relation to theholder is determined by a screw 191 which is mounted to rotate withoutthreaded engagement in the outer end of the transverse slide and hasthreaded engagement with the lateral extension of the holder. The holderand transverse slide are rigidly locked together after adjustment by acap screw 192 which passes through a slot in the holder and engages theslide. 194 denotes a spring, one end of which is connected to thetransverse slide and the other to the table, the action of which is topull the transverse slide, carryin with it the holder, slide 169 and thecut-o tool, inward until stop screw 193 contacts with the framework. Theinner point of operation of the cut-off tool (that is the positionnearest the framework) is determined by adjustment of stop screw 193.Turning said screw inward forces the holder and the parts carriedthereby outward from the framework against the .power of spring 194 andturning the screw outward allows the spring to pull the holder and theparts carried thereby toward the framework. After this adjustment thestop screw is locked in position by means of a set nut.

To determine the outer point of operation of the cut-off tool (that isthe position farthest from the framework) the high portion of cam 181 onshaft 57 is first caused to engage roll 182 on arm 183 causingcontrolling rod 185 to be carried to the limit of its outward movement,as will be best understood by referring to Fig. 18. Cap screw 192 is nowloosened and screw 191 is turned in or out as the case may be, to adjustthe holder, slide and cut-off tool, it being understood of course thatthe inner end of transverse slide 186 is held against the end of the controlling rod by spring 194. Bearing this in mind. it will readily beseen that rotation of screw 191 will cause the holder and the partscarried thereby to be moved in or out, as may be. to the desiredposition. Cap screw 192 is then tightened up to lock the holder to thetransverse slide. Should it be required to utilize the full throw of thecam it is simply necessary to turn screw 191 inward-far enough to causethe holder to move outward a distance equal to the throw of the cam, theeffect of which is to move the operative part of stepped roll 173 onslide 169 out of engagement with the groove in cam 58, causing onerevolution of the cam to be abortive as will presently be explained.This adjustment of screw 191 will cause the end of the stop screw to becarried away from the framework an amount equal to the change inposition of the cut-off point and when the low portion of the ram 181 isplaced in engagement with the roll on arm 183 the holder will be movedby the spring to its inner position as determined by the stop screw. Thecam remains unchanged under all circumstances, the position of the highpart being located to operate just before the cut-off operation takesplace. Turning now to Fig. 2, it will be wheels 53 and 54 which differin diameter.

Gear wheel 53 normally meshes with gear wheel 55 on cam shaft 57 andimparts to said shaft its normal movement. Under certain conditions,however, as in the makmg of springs requiring an extra length of wire orin making cone springs in pairs as already described, it is desirable toreduce the speedof the cam shaft and the mechanisms. driven therefromwith relation to th e other mechanisms of the machine. This is effectedby loosening gear wheels 55 and 5b (which are shown as carried by asingle hub) and moving gear wheel out of engagement with gear wheel 53on the intermediate shaft, and moving gear wheel 56 into engagement withgear wheel 54 on said shaft. Gear wheels 53 and are shown as having anequal number of teethQwhile gear wheel 56 has double the number of teethof gear wheel 54, so that the change from an intermeshing of 53 and 55to an intermeslr ing of 54 and 56 reduces the speed of the cam shaftone-half. In other words, in-

stead of a one to one relation'between the three mechanisms operatedfrom the cam shaft and the other mechanisms of the machine, the changedescrlbed above establishes a one to two relation. The same principlewould apply should a one to three relation be desired, the only changesrequired being in the sizes of gear wheels 54 and 56.

It has been explained that, the length of wire fed at each actuation ofthe machine is determined by the adjustment of the pivotal point of link49 on gear wheel 47. This determines the throw of segment gear 50 andconsequently the amount of wire drawn in b the feed rolls. Sixty inchesof wire has also been arbitrarily fixed upon as the normal maximumlength that the machine is adapted to manipulate. Starting from thisbasis it is obvious that to feed any required length of wire less thansixty inches it is merely necessary to move the pivot of link 49 inwardon ear wheel 47. In order, however, to provide for the making by thismachine of springs requiring an amount of wire in excess of the normalmaximum and for the making of cone springs in pairs I have provided themeans just described for reducing the speed of the cam shaft whichactuates the diameter control, the pitch control and thecut-ofi'control, and have especially provided the cut-off control. Suppose nowthat it is required to make a straight spring requiring a length of wirein excess of the normal maximum; gear wheel 56 on the cam shaft isplaced in engagement with gear wheel 54 on the intermediate shaft, theeffect of which is to produce but one rotation of the cam shaftcoincidently with two complete revolutions of the main shaft andconsequently two actuations of the feeding mechanism to each actuationof the three controlling mechanisms actuated from the cam shaft. Thenext step is to so adjust link 49 upon ear wheel 47 as to cause eachactuation of t e se ment gear to feed onehalf the length 0 wire requiredfor the spring. For example, if the spring required seventy inches ofwire, link 49 would be adjusted to produce a feed of thirty-five inchesat each actuation of the machine. In practice the first feedingoperation would take place and the formation of the first half of thespring, then the second feeding operation, followed by the completion ofthe spring at which instant the cut-off tool would operate. It is theoperation of the cut-off control that prevents the cutting off of thehalf-finished spring. In other words,

it is required that each alternate operation of the cut-off tool bedispensed with or rendered abortive. For this purpose transverse slide186 is adjusted relatively to holder 170, as previously explained, so asto utilize the full throw of cam 181, the high portion of said camacting on controllingrod 185, at

' the instant the first feeding operation stops and the cutting offoperation would normally take place, to cause said rod to move thetransverse slide, holder and parts carried thereby outward. The effectof this movement is to carry the operative portion of roll 173 out ofthe groove in cam 58 leaving the stepped portion only of said roll,specifically indicated by 195, in engagement with said roove," (see Fig.14*) so that although sli e 169 carrying the cut-off tool receives apartial actuation from cam 58 it is abortive and accomplishes no resultwhatever. At the next actuation of the cut-off mechanism, which will beafter the second feeding operation, and after the formation of thesecond portion of a spring, the low portion of cam 181 will be inengagement with arm 183 and the controlling rod will not be affectedthereby, leaving the cut-off to operate in its usual manner. I thus forma spring requiring an extra amount of wire by two actuations of themachine instead of one and provide for cutting it off when completed.

Another and vitally important use of the cut-off control is in themanufacture of cone springs. These are made, as already explained,successively large end to large end and small end to small end. Themachine is adjusted, as just described, to produce one actuation ofshaft 57 and the three control ling mechanisms coincidently with twoacjust after the formation of a new cone has commenced, the cut-off toolacting to cut off cones alternately at the greatest diameter and at thesmallest diameter. The forming and cuttin off of cone springs isdiagrammatically 1 lust-rated in Fig. 24. The formation of springs, asindicated, is from right to left. An entire double cone comprising twosprings is illustrated, also the first coils of a third spring. Thefirst spring, the one toward the left, is shown in full lines and wascut off at the middle of the coil of greatest diameter. The secondspring is shown in dotted lines and was cut off at the middle of thesmallest coil. It will be remembered that the feeding mechanism stopsafter each actuation, that is, during the return movement of segmentgear 50. The mechanisms are so timed, however, that this stoppage of thefeed does not take place at the end of a spring but after one or morecoils of a new spring are formed, as clearly shown at the right in Fig.24. In other words, the amount of wire feed at each actuation in themaking of cone springs completes a partly formed spring and forms one ormore coils of a new spring before the feeding movement stops. At thisinstant the setting operation takes place, followed by the cutting offoperation.

It will be understood that the portion of the new spring that is formedis not any special number of coils but so much of the spring as can beformed from the amount of wire fed that is not used in making the lastprevious spring. It follows therefore that this arbitrary amount of wirewill make more coils when the small end of the spring is formed firstthan when the large end is formed first. Remembering therefore that thecutting-off operation must take place alternately at the middle of thelargest 'coil and the middle of the smallest coil, it follows that theposition of the holder and cut-off tool must be moved slightly toward orfrom the coiling rolls in making the alternate large diameter and smalldiameter cuts in order to compensate for the change in distance from'thecoiling rolls at which alternate cuts mustbe made. This novel result isproduced by the cut-off control. The present requirement does not bringstepped portion 195 of roll 173 into use but merely moves said rollinward or outward more or less, as may be required, in the groove of cam58. For this purpose transverse slide 186 is adjusted relatively to theholder as previously explained. lVhen the lowportion of the cam 181 isin engagement with arm 183 there will be no movement of the controllingrod and slide 186 and consequently no lateral movement of the holder andcut-off tool which when moved forward by cam 58 will make the cut at themiddle of the largest coil. Before the next cut-oil movement, however,the fixed amount of wire in excess of the completed spring, which oesinto a new spring, will have'been formed It follows, therefore that thecut-o operation must be made at a slightl greater distance from thecoiling rolls tian a cut-ofi operation which separates the large ends oftwo springs. This is effected by the high portion of cam '181 whichswings arm 183 toward the left, as seen in Fig. 18, and moves thecontrolling rod and transverse slide carrying with it the holder, slide169 and the cut-oil tool, slightly away from the framework and retainsit there while the cuttingofi' operation takes place. 7

The operation of the machine as a whole is briefly as follows: Theamount of wire fed at each actuation is determined by the ad'ustmen't oflink 49 on ear wheel 47. A ter each actuation of the Ieedin mechanismand while the feed rolls an coiling rolls are stationary, the settingmechanism operates to set the spring before it is out 011',

after which the cut-"01f mechanism operates followed at once by anotheractuation of the feeding mechanism. In the making of barrel, cone andother springs having coils of varying diameter, the diameter ofsuccessive coils is determined by a special mechanism which I term thediameter control. The distance of the coils apart in the longitudinaldirection of the s ring is determined by mechanism which Fterm thepitch-control. In order to provide for the makin of springs of unusuallength and for ma ing cone springs in pairs, large end to lafge end andsmall end to small end, -I provi e special means for reducing the speedof the diameter control and the pitch control with relation to thefeeding mechanism so as to produce two actuations of the feeding mech--anism coincidently with one actuation of the diameter control and thepitch control.

In order, in'the making of springs of extra length, to make eachalternate actuation of the cut-off tool abortive and in order toautomatically shift the position of the cut-off tool so that it willoperate alternately at the large and small ends of cone springs,

I provide special means for controlling the action of the cut-off toolwhich'I term the cut-oil control.

The machine provides for the making of coil springs of any length, sizeor style up to the normal maximum of the machine, and from any size ofwire within the capacity of the machine. In addition to this, bycontrolling the action of the cut-off I provide for making springs ofextra length up to double the normal maximum of the machine.

Having thus described my invention -I claim:

1. In a machine for making coil springs,

into small coils instead of lar e coils.

the combination with feeding mechanism and cut-ofi mechanism, of coilingrolls. slides by which they are carried, roralalilc holders in which theslides are adjustable, and means for locking the slides and the holdersafter adjustment.

2. In a machine for making coil springs, the combination with feedingmechanism and cut-ofi mechanism, of coiling rolls, slides by which theyare carried, one of said slides being free to reciprocatelongitudinally, a cam, and mechanism intermediate said cam andthe-reciprocating slide, whereby progressive increase or decrease in theI diameter of the coils is produced.

3. In a machine for making coil springs, the combination with feedingmechanism and cut-ofi' mechanism, of coiling rolls, slides by which theyare carried, holders for said slides, one of said slides being free toreciprocate in its holder, a second slide in said holder to which thefirst slide is connected, means for adjusting the first slidelongitudinally with relation to the second slide, a cam, andintermediate connections between the cam and the second slide wherebyprogressive increase or decrease in the diameter of the coils isproduced.

4. In a machine for making coil s rings, the combination with feedingmec anism and cut-off mechanism, of colhn rolls, slides by which the arecarried hol ers for said slides, one 0 said slides being free toreciprocate in its holder, a second slide in said holder to which thefirst slide isv connected, a spring acting to retract the slides in thelast-mentioned holder, a cam, and connections intermediate the cam andthe slides in the last-mentioned holder, whereby progressive decrease orincrease in the diameter of the coils is roduced.

5. In a mac ine for making coil springs, the combination with feedingmechanism and cut-off mechanism, of coiling rolls, slides by which theyare carried, rotatable holders for said slides, one of said slides beingfree to reciprocate in its holder, a cam, and mechanism intermediate thecam and the slides, substantially as described, for the purposespecified.

6. In a machine for making coil springs, the combination with feedingmechanism and cut-ofi' mechanism, of coiling rolls, slides by which theyare carried, holders for said slides, one of said slides being free toreciprocate in its holder, a second slide in said holder to which thefirst slide is connected, a spring acting to retract the slides in thelast-mentioned holder, a bell-crank lever engaging the second slide, acam, a second bell-crank lever en a 'ng the cam, and a link connectingsaid elI crank levers.

7. In a machine for making coil s rings, the combination with feedingmec anism and cut-off mechanism, of coiling rolls,

the coiilhinatitn a, s ing, qr sec on'd be l-crank' s aif. i flwi fi eei t h8 a' ma enter. 'akingco 'lsprmgs, t a ct) mhinialt om wi'tlieedi'ng mechanism, i aea r at of a pn'shepadapted tghear 'na formed..geei ar ateea ee wire an separ t saidcoi'l fromthe 0011 that isbeingformed;

I n 17 I r' Mar et. spri g thn 'e mbiriatilonj with feeding mechanism,"

coiling .mfcha' sin and ,cpt-qirmechani m i I, d o

I lapart in the longitudinal direction of the gs'p'ring.

e l sif r e eru r fflpfi W e l 11 9 i y rm coii. 2nd separate said coili i em. thecoil that being. formed and miningthe throw of the pu her andconsequegt spaciflg apart of tnec ns;

I aiqr a ea gi lsns ga with" fee mechanism, coilin mechanism ,andcutroif, mechanism, of a p sher adapted tobearupon' a formed coilandjmeans for adjusting said p'usher W M the comhi n'ation with coilingmechanism. and 1 cut o'fi mechanism, of hecha'nismfor setting eachcompletely formed spring before it is to v 'aryin'g sizes of wire anddiameters of coils. 5

11. ;I a machine-for making, coil springs, thelcombinatioii with feedingmechanism, coiling mechanism andcut-ofi mechanism, of

- a pusher adapted tobearupon a formed coil,

for thepurpose set fo-rth, a rod by which said usher iscarried, a cam,and adjustable cognecti'ons intermediate the cam and the ro 12.1111 a'machine for making coilsprings, the combination with feeding mechanism,coiling mechanism and cut-o mechanism, of a pusher adapted to bear upona formed coil, for the purpose set-forth, a rod by which said pusher iscarried, a' cam, a shaft by which the cam is carried, an arm having ayoke which straddles the shaft and a roll engaging the cam, and aswinging arm to which said arm and the rod are adjustably connected todetermine the throw of the pusher,

13. Ina machine for ma ingcoil springs, the combination with feedingmechanism, coiling mechanism and cut-off mechanism, of a pusher adaptedto bear upon a formed coil, for the purpose set forth, a rod by whichthe pusher is carried, a spring-controlled swinging arm to which the rodis adjustably connected, a cam, and interme diate connections betweensaid cam and the arm. v

14. In a machine for making coil springs, the combination with feedingmechanism,

, adjlis 2 n sted, n

: ceifisher a apted ,1; mechanism, i a

pen ,6 are the nd, ut-

l f d to heafi' i'pon' a formed coils" a ,ipfin'gebnti olled swing ng,arm .to at it. a y I. m l '1 00.n-

1 s swi gin ar a d e ,1 ,1 a' n nt e ew s ech e s:

piglthe' swinging arm, for the purpose set or '1' i 15-, lee-m h e??kies ei r s,

w b ir ,up n a formed nd a and, intermediate, connections or deterl'ning'1 the throw of the pusher.

16. 1 11,23 inefo making coil springs, pmb fiee .iYt hi. e in iiqhee m.,,.-mes=hen. fi mes es-e causing a red term neddecrease or increase inthe diameter of the coils and mechanism for deter'inifig the distance ofthe coils 1,7; In amichine far making c911 springs,

.' v w. IN; niqx H r the combinatioh with co1l1n mechan sm and cnt oflmechan sm pf mec f n sh; for pro- 'essi'vely decreasing or ncreasmg thediametrof the coiisefi 'd mechanism for determinin the distance of thecoils apart in the longitudinal direction of the spring'.'

. 1 8 In amachinefor makingcoil' springs,

cut ofi. M, t

I9.' In aniachine for making coil springs,

the with coiling mechanism and cuto'fi Inechanism,fof mechanism forcausing a predetermined decrease or increase in the diameter of thecoiis and mechanism for setting each com'ple ely formed spring before ii' g 1st nd gut-'01? mecha i m;

Q ii di ta y.. .n e

1 is? ,wm in nei w t ed' g m ch n :c'oilj n me: an s' mand 'eutgomechanism,

20 In amaichine making coil springs,

I the cnmbi n'atio'n with coiling mechanism and ametei' of thecoils,mechanism for determining the distance of the coils apart in thelongitudinal direction of the spring, and mechanism for setting eachcompletely formed spring before it is cutoff.

21. In a machine for making coil springs, the combination with coilingmechanism and cut-off mechanism, of a setting plunger which acts uponthe spring while held by the coiling mechanism. 4

22'; In a machine for making coil springs the combination withintermittently acting feeding mechanism, coiling mechanism and cut-offnechanism, of mechanism for setting each spring while the feedinmechanism is inoperative and the spring is held by the coilingmechanism. I

231 In a machine for making coil springs the combination with coilingrolls, of a setting plunger and means for actuating said plunger whilethe spring is held by the rolls.

24. In a. machine for making coil springs the combination with coilingmechanism, of setting mechanism acting while the spring is held by thecoiling mechanism.

25. In a machine for making coil springs the combination with coilingmechanism, of mechanism for setting each spring While held bythe coilingmechanism. a

26. In a machine for making coil springs the combination withintermittently acting feeding mechanism and coiling mechanism, ofmechanism for setting each spring while the feeding mechanism isinoperative.

27. In a machine for making coil springs, the combination with coilingrolls, of a setting plunger whose axial line is parallel with butslightly outside the axial line of the spring, and a supporting platewhereby buckling of the spring is prevented.

28. In a machine for making coil springs the combination with coilingrolls, of a setting plunger, a supporting plate, means for adjustingsaid plunger, and means for adjusting said plate.

99. In a machine for making coil springs the combination with coilingrolls, of a setting plunger and means for adjusting said plunger withrelation to the axial line of the spring. I

30. In a machine for making coil springs the combination with coilingrolls, of a setting plunger and means for adjusting the throw of theplunger.

31. In a machine for making coil springs, the combination with coilingmechanism and a setting plunger, of an adjustable bracket by which theplunger is carried, a cam, a lever pivoted to the bracket and engagingthe cam, and a link pivoted to the lever and adj ustably connected tothe plunger.

32. In a machine for making coil springs, the combination with coilingmechanism and a setting plunger, of a bracket by which the plunger iscarried, a cam, and operating connections between said cam and theplunger.

33. In a machine for making coil springs, the combination with coilingmechanism and a setting plunger, of a bracket by which the plunger iscarried, a cam, a lever pivoted to the bracket and engaging the cam, alink intermediate the lever and the plunger, and a spring acting toretain the lever in engagement with the cam.

34. In a machine for making coil springs, the combination with coilingmechanism and a setting plunger, of a bracket by which the plunger iscarried, a cam, operating connections intermediate said cam and theplunger, means for adjusting said bracket longitudinally, and means foradjusting said bracket transversely.

35. In a machine for making coil springs,

plunger is carried, a plate, a rib and groove connection between saidbracket and late, means for adjusting said plate and with it the brackettransversely, a cam, and operating connections intermediate said cam andthe plunger.

36. In a machine for making coil springs, the combination with coilinmechanism and a setting plunger, of a brac et by which the plunger iscarried, a plate, a rib and groove connection between said bracket andplate, means for locking said bracket to the plate, a second bracket, ascrew in said second bracket engaging the plate, for the purpose setforth, a cam, and operating connections between said cam and t e lunger.

37. In a machine for mail: the combination with coilin mechanism and asetting plunger, ofa brac (et by which the plunger is carried, a plate,a rib and groove connection between said bracket and plate, a secondbracket, a screw. in said second bracket engaging the plate whereby theaxial line of the lunger may be ad usted to right and leftland springs,a cam, and operating connections between said cam and the plunger.

38. In a machine for making coil springs, the combination with coilingmechanism, of

ing coil springs,

mechanism for setting each spring and means for preventing the springfrom buckling.

39. In a machine for making coil s rings, the combination with coilingrolls, 0 a setting plunger and an adjustable supporting plate, for thepurpose set forth.

40. Ina machine for making coil springs, the combination withintermittently acting feeding mechanism and coiling mechanism, ofcut-01f mechanism and mechanism for causing the cut-oil mechanism to actduring alternate inoperative periods of the feeding mechanism.

41. In a machine for making coil s rings, the combination with feedingme anism and coiling mechanism, of a reciprocatin cut-olf tool and meansfor adjust-ing sai tool for difi'erent sizes and winds of springs.

42. In a machine for making coil springs, the combination with coilingmechanism and a reciprocating cut-ofit' tool, of a cut-01f die lyingwithin the coils and means for adj usting said die for different sizesand winds of springs.

43. In a machine for making coil springs, the combination with coilinmechanism, of a reciprocating cut-off too a cut-off die lying within thecoils, and means for adjusting said tool and said die for differentsizes and winds of springs.

44. In a machine for making coil springs, the combination with a cut-01fdie and a cut-

